Housing
What size is your tank? 1g
What temperature is your tank? 76
Does your tank have a filter? no
Does your tank have an air stone or other type of aeration? no
Is your tank heated? yes
What tank mates does your betta fish live with? no

Food
What type of food do you feed your betta fish? top fin
How often do you feed your betta fish? 2 times a day 4pellets total

Maintenance
How often do you perform a water change? 2 times a week
What percentage of the water do you change when you perform a water change? 50 once a week/100 once a week
What type of additives do you add to the water when you perform a water change? Prime water conditioner used two drops...did I use enough?

Water Parameters:
Have you tested your water? If so, what are the following parameters?

Symptoms and Treatment
How has your betta fish's appearance changed?Has trouble swimming down her tail just keeps going up. She tried to go into a cave and it took a lot of work. Appears to be a little bloated or eggy.
How has your betta fish's behavior changed? No not really
When did you start noticing the symptoms? Now
Have you started treating your fish? If so, how? no
Does your fish have any history of being ill? no
How old is your fish (approximately)? I have had her 2 years

I just put her back in as today was 100% water changing day. This is the first I have noticed it. She appeared to eat just fine as I also just fed her. Acclimated her as usual. Could she be eggy? I had her next to one of my males tanks. I don't normally do that. He totally ignored her though. It doesn't seem normal as I keep another female in a divided 10g with two other boys so I am thinking that isn't the problem.

It sounds like she has swim buoyancy. My Rosanna (the middle betta on my avatar) had it and she was just like that. I found out that she had been eating bubbles and it threw off her swim bladder. By the next day she was fine. I didn't have to do anything.